compound
A pond isn't a element, compound, solution, colloid, or heterogeneous mixture. So it's either a suspension or a homogenous mixture My vote is suspension
heterogenous
mixture
element
It is a heterogeneous mixture.
Vinegar is a homogeneous solution of acetic (ethanoic) acid in water.
suspension
homogeneous
homogeneous and its a colloid
a heterogeneous mixture
homogeneous mixture, colloid